3 4 2 4 7 5 6 8 3 1 9 7 3 8 4 2 5 6 8 5 9 7 1 6 3 06-10-2017.......hard 06-10-2017 www.daily-sudoku-puzzle.com

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2=>(8,1) | 3=>(2,4) | 3=>(7,3) | 3=>(8,6) | 1=>(8,5) | 4=>(9,3) | 4=>(8,8) | 1=>(2,9) | 5=>(6,5) | 1=>(6,6) | 4=>(7,6) | 5=>(9,8) | 2=>(4,5) | 6=>(4,4) | 2=>(2,2) | 9=>(2,5) | 5=>(4,3) | 7=>(4,8) | 5=>(3,1) | 7=>(6,2) | 2=>(5,3) | 8=>(6,1) | 3=>(4,2) | 3=>(6,7) | 6=>(5,1) | 4=>(5,2) | 9=>(6,3) | 6=>(6,8) | 6=>(7,9) | 1=>(7,8) | 9=>(5,8) | 8=>(4,9) | 4=>(4,7) | 1=>(5,7) | 5=>(5,9) | 4=>(3,9) | 5=>(1,7) | 9=>(1,9) | 7=>(3,7) | 9=>(3,2) | 8=>(1,2) | 7=>(1,6) | 8=>(3,5) | 7=>(7,5) | 1=>(1,4) | 6=>(1,3) | 7=>(9,1) | 9=>(7,1) | 6=>(3,6) | 2=>(9,6) | 1=>(3,3) | 2=>(3,4) | 8=>(7,4) | 9=>(9,4) | 2=>(7,7) | 8=>(9,7) |